Skip to main content

Research Repository

Advanced Search

All Outputs (5)

Evaluating the effects of game design on lotto sales: a case study from Spain (2010)
Journal Article
Forrest, D., Perez, L., & Baker, R. (2010). Evaluating the effects of game design on lotto sales: a case study from Spain. ˜The œjournal of gambling business and economics (Print), 4(2), 1-19

In February, 2005 the Spanish National Lottery Agency (LAE) made several modifications to the design of one of its lotto games. The entry fee was not changed but the familiar 6/49 format was replaced by 5/54 + 1/10. This considerably lengthened the o... Read More about Evaluating the effects of game design on lotto sales: a case study from Spain.

Risk aversion in maintenance: a utility-based approach (2010)
Journal Article
Baker, R. (2010). Risk aversion in maintenance: a utility-based approach. IMA Journal of Management Mathematics, 21(4), 319-332. https://doi.org/10.1093/imaman/dpn013

In the author's concept of risk-averse maintenance, introduced in a previous paper, we seek to minimize the disutility of cost per unit time rather than to minimize cost per unit time itself. This gives a maintenance policy that is optimal under risk... Read More about Risk aversion in maintenance: a utility-based approach.

Inference for meta-analysis with a suspected temporal trend (2010)
Journal Article
Baker, R., & Jackson, D. (2010). Inference for meta-analysis with a suspected temporal trend. Biometrical Journal, 52(4), 538-551. https://doi.org/10.1002/bimj.200900307

There is sometimes a clear evidence of a strong secular trend in the treatment effect of studies included in a meta-analysis. In such cases, estimating the present-day treatment effect by meta-regression is both reasonable and straightforward. We how... Read More about Inference for meta-analysis with a suspected temporal trend.

How does the DerSimonian and Laird procedure for random effects meta-analysis compare with its more efficient but harder to compute counterparts? (2010)
Journal Article
random effects meta-analysis compare with its more efficient but harder to compute counterparts?. Journal of Statistical Planning and Inference, 140(4), 961-970. https://doi.org/10.1016/j.jspi.2009.09.017

The procedure suggested by DerSimonian and Laird is the simplest and most commonly used method for fitting the random effects model for meta-analysis. Here it is shown that, unless all studies are of similar size, this is inefficient when estimating... Read More about How does the DerSimonian and Laird procedure for random effects meta-analysis compare with its more efficient but harder to compute counterparts?.